Top-cock



(No Model.)

J. L. DIBBLB.

STOP COCK.

No. 262,935. Y Patented Aug.'22, 1882.

Hari.

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7M' A www NrrE STATES ATENE ."EEicE.

` JOHN L. DIBBLE, OF BROOKLYN, NEW YORK.

SPECIFICATION forming part of Letters Patent No. 262,935, dated August 22, 1,882. y n Applicatie tiled October-27,1881. (No model.)

To all whom it may concern Be it known that I, JOHN L. DIBBLE, of Brooklyn, in the countyot' Kings, in the State of N ew York, have invented certain new and Y useful improvements relating to Stop-Cocks,

ot' which the following is a specilication.

I render available the tendency of an elastic' material, like india-rubber, to form a tight joint, when pressed against another surface, by its own elasticity or the force of theiluid, or both.

My invention may be carried out in several forms, adapted for several diterent situations. I will describe what I consider the best.

'lhe accompanying drawings form a part of this specification. All are sectional views.

Figure l is a longitudinal section through a stopcoek or faucet of the style commonly ap-v piledV on stationary washfstands to let oand shut oil' the water. Figi). is a cross-section ou the line SS in Fig.1. Fig. 3 isacentral longitudinal section through a form of a self-closin g cock. Fig-4C is across-section through the same on the line TT in Fig. 3. Fig. 5 is a longitudinal section through another form, adapted for what `is generally termed a bibcock for sinks, tanks, and analogous uses. Fig. 6 is a section on the line V Vin Fig. 5. Figs. 7 and S represent certain portions dei tached. Fig. 7 is a' central longitudinal section, and Fig, S a cross-section on the `line X X in Fig. 7. Fig. 9 is a longitudinal section through a straight-way cock. Fig. l0 is a section on theline Y Yin Fig. 9. FigQll is a longitudinal section, showing a modiiicatiou ot'Fig. 9. y

Similar letters ot' reference indicate correresponding parts in all the figures.

Figs. 5, (i, 7, and 8 show the invention most fully carried out, and I willrst describe that form. i l

A is the body of the construction, the end (not shown) being adapted to be driven into a barrel or to be soldered upon a water-pipe, or otherwise attached to any vessel or pipe, as convenience may require.

B is a plug, madewithout taper, and of' considerablysmaller diameter than the vertical passage through the casing A. It has a hollow interior opening at the lower end, as indicated' by b. Two liberal apertures, bi, open laterally from the hollow b, and the turning of the plug B by the handle B' opens and closes these apertures by bringing them into or out otcoincideuce with corresponding apertures! (1*, in a hollow cylinder of rubber, I), which tills the space around the plug B, and is formed with a tiange, D', at. each end, by the aid of which it is held fast inl the casing withoutliberty to turn.

C is atnbe, of spring-brass or other suitable material, iianged outward at one end, as indiA cated by C', and cut open longitudinallyalong one side at t, so as to allow it to open and close. It is finished smoothly on its inner face. Its outcr face may be left rough, as it has simply to receive the compressive action of the rubber without appreciable motion relatively thereto. The rubber is molded or otherwise produced of a iittieie'ss internal diameter' than the exterior of the thin elastic metal U.' It follows that the rubber, and consequently the metal C, is pressed with gentle force against the entire exterior ofthe plug independent ot' the pressure ot' the water. I provide a sut'- ficienttspace within the casing Aexterior to the rubber envelope l.) to allow the water or other iuid which Vfills the casing A to liow quite around and to press forciblyon all sides.v

-O and l) are applied together, so that their holes ci* d* coincide. The brass C and rubber AD are held against turning by means ot their flanges CD', which are compressed hy a ring,` E, formed as shown,applied above thefiangcs and -forced down by a. threaded ring, (l, screwed forcibly from above to form a tight contact. An annular space is left in the ring lli for the play of a pin, B, which is set in the plug li and serves to hold the latter against end movement.

H is a threaded ring surrotnidingg,` the lower end ot' the plug B and screwednp forcibly` against the 'liange at the lower end otl the soit cylinder l). The flange C is continued quite around. In other words, the longitudinal cut or split t in the body of the sheet-metal tube (J does not extend quite tothe dang-e. Af par -I OO tial cross-cut or division, w, is made between the body C of the metal tube andthe {lange G; but care lnnstbe taken to leave suicient connection between the flange and .the body to insure a strong hold,'so that so long as the flange C is firmly confined by the compression oi' the ring E the body C shall not turn around with the motion of the plug B. In turning the plug the i'rictionoccurs between its exterior and the inner surface of the elastic ring C. `Thela'tter is held in reliably close contact with the plug by the rubber D outside.

In applying the parts together the rubber D-D is collapsed slightly and thrust i-nte'the casing A from either end of the vertical passage and allowed to expand. Gare must be taken not onlythat the holes d* are presented fairly to receive the wateror other iluid coming through a liberal passage inthe casing A, but also that the tianges Dat cach end tit properly in their respectii'e places. Then the brass or other metal O is collapsed slightly and thrust down irmly into place, care being taken that the holes c* coincide exactly with the holesin the lrubber D. The the ring E is applied, the plug B inserted, preceded, if necessary, by a smooth conical plug, to properly hold out the brass U and its elastic iuclosure to allewrthe insertiontot' the plug B, which latter is prel'clably made with little or no taper. Gare must betaken to bring the pin B3 to the correct position. This insures that the holes b* are at the same level as the corresponding holes c* and d. lVhether they coincideor not will depend upon how the plug is turned. Then 'the ring G4 is screwed down with gentle force upon the ring E. A corresponding threaded ring H being applied below and screwed upin a similar manner to compress the lower tlange, D', of the rubber, the cock is complete. v.

In the operation of the cock, when there is no 'pressure on the tluid thejoiut between the plug and the metal C is held tight simply by the perfect titting of the parts and the gentle pressure due to the contraction of the rubber D. When there is au appreciable pressure ot' the tluid in the case A, this, by flowing all around and pressing on all sides of the rubber, and consequently ot the inclosed InetalC, insures a still tighter contact'.

When it is desired to separate the parts for examination or repairs the rings G and H are unscrewed andy the plug withdrawn. Then the ring Eycan be taken oi and*l the metal C drawn ont, and then the rubber collapsed and similarly removed.

Among other advantages due to my inven` tion is the availability of iron as the material for the body A and plug B. There is no contact ot' these parts. They cannot rust 'together. v f

I propose to cover the iron plug with a thin tubing ol' brass, which shall be' permanently connected thereto and turn therewith asa part of the same. The union may be effected by simply shrinking a drawn tube of brass upony the previously-cleaned surface of theiron plug, orthe parts may be tinned and sweated together. Such constructionv will allow the screw-rings G H to be also made of iron.

Figs. 9 and 10 show a cock for application at any point along a tube where it is desired to have a straight way or straight vpassage .of the tluid through the plug of the cock. The plug is formed in the ordinary manner, except that it is preferably without taper. The elastic metal lining C C is formed the same as previouslydescribed,except that there are two passages, ci', at points in the periphery diametrical ly opposite to each other. They correspond to the slot or water-way formed through the plug. The rubber envelope is formed with two corresponding apertures and without anges.

Fig. 1l shows asection through a portion correspondingto Fig.9,but with a tlange,C,on the metal and a threaded ring, G, screwed down thereon. This allows lholding the rubber D and the metal lining C with great firmness against being possibly turnetlwith the turning of the plug. I do not esteem this addition generally necessary. In both the forms the plug B may be held reliably in place endwise by the head or diskvI on the screw I', which is tapped into the lower end of B.

Figs. l` and 2 show my invention applied in a less 'complete form, but still so as to be highly useful. In this the elastic metal C is omitted. The rubber D is formed with one ange, D', pressed downward by a ring, E, which is forced down firmly by a vvscrew-cap, G, which engages strongly with the casing A, The hollow plug B in this arrangement opens npward,aud has rigidly -connected to it the horizontal, arm B', which serves both as a handle for turning and as a tube for conveying the water properly, like the cocks of ordinary basins.

Fig. 3 is also fitted up without the metal lining. The rubber is formed with one flange, which is strongly compressed by the ring E, which latter is held iu contact by screwing on the dischargcmozzle A'. In this modification the plug B does not turn, but is moved endwisebya pressure applied ou the button Bz through the stem B. There is no critico throngh the rubber D. To open the cock the plug B is moved forcibly inward, so as to uncover the apertures b*. When the pressure of the liquid is considerable this cock will be self-closing. When the pressure is gentle it requires simply to be drawn back by force applied to the button B. i

I have shown a washer below the soft euvelope in Fi gs. 5, 9, and 11. I esteem it well to employ such 5 but I do not deem it essential.

.Further modifications may be made. A spring may be applied under the button 'B2 in Fig. 3 to aid in closing the cock promptly. A sheet-metal lining corresponding to C nlay be introduced in the forms shown in Figs. 1 and- 3. The sheetmetal lining may be yomitted in theforms shown Vin Figs. 5 and 9. Cocks of other proportions and forms may be fitted np in a corresponding manner, so that the rub-- ber D shall be correspondingly pressed against the plug by its own elasticity or the force of IOO . lceases s the fluid, or both, either with or Without the interposition of the metal lining O. It may be practicable to employ other material than rubber for the elastic envelope D. I can use lead, tin, and perhaps various other materials which oiier little friction in place of brass for the lining C. The material O avoids the high friction due to the peculiar nature of rubber. It also avoids the forcing of the rubber into the apertures b* of the plug. The split condition of the part C allows it to readily contract. y The invention allows for wear and for imperfections of devices, and will, I believe,

last much longer. Gare must be taken to employa good quality of material in the envelope inder ot' metal with The other parts of the invention may be used successfully with metal interposed in the place ofthe sheet metal C, which may be very differently formed and diiferentlyheld in place. I propose especially to use a flanged thin cylthe proper hole or holes, ci, exactly as shown in Fig.'7, except that the transverse partial cut w shall be omitted and the longitudinal cut t shall be carriedlquite up through the flange C. This will not be as good as the construction shown, because I cannot hold the flange with absolute firmness at all points without interfering with the elastic action of the metal C; butit maybe practicable, and will enable me to realize some ofthe benelits of the invention. I should in such case split the Bange C' points, but the body C only at one place.

I attach importance to the fact thata chamber for the fluid extends around between the plug and the casing. It allows the fluid to press on all sides ofthe rubber envelope. The latter is etfectually held to its bearing against the inclosed parts by its own elasticity, and also by the pressure of the fluid when in use.

workmanship more eftectually than the ordinary at a good many.

I claim as my improvement in stop-cocks or faucets;

l. The cylindrical casing A and cylindrical plug B, having a chamber extended around be- -45 tween them, in combination with au envelope or incasement of elastic material, D, urged toward the plug by its elasticity and also bythe pressure of the tluid, as herein specified..

2. The combination ofthe body, plug, elas- 5o tic envelope, and interposed metal C, arranged to serve as herein specified.

3. rlhe soft envelope D, formed with a flange,

D', in combination with the plug B, having the iiange B lying above the upper flange of the 55 envelope D, and ring` Gadapted for compressing and reliably holding the flanges D and B3, asherein specified. I

4. The' plug B, with opening bit, an elastic metallic ring, (l, with corresponding opening', 6o ci, and soft envelope D, with opening dit, in combination with each other and with means for holding and operating them in a suitable casing, A, as herein specified.

5. The elastic tubular flanged lining 'C C, 65 with the body C, divided by a longitudinal split, t, and partly separated from the flange by a transverse cut, w, in combination with the plug B, soft envelope D, `body A, and means G for strongly holding the flange G',v 7o as herein specified.

In testimony whereof I lhave hereunto .set myhand, at New York city, this 26th day of October, 1881, in the presence of two subscribing` witnesses.

JNO. L. DIBBLE. l Y Vitnesses:

CHARIES C. STETsoN, 4 CHARLES R. SEARLE. 

